Answer:
The answer is "148050 and 246740".
Step-by-step explanation:
Please find the complete question in the attached file.
for point a:
Cost
Less: Salvage value
Depreciable cost
Divide by Useful life
Annual Depreciation

Depreciation expense
Accumulated Depreciation
for point b:
Double declining balance rate
Depreciation for 2019
Depreciation for 2020
Depreciation expense for 2021
Depreciation expense 78840
Accumulated Depreciation
